No, blockstun is how many frames the opponent can't move after blocking a move.
Advantage is how many frames you can act before they can.
Not when it comes to jumping moves, since you have a universal time when you can move again, being upon landing.
Blockstun also doesn't change, so as it ends up you have the same advantage but how its used is different.
If you hit it lower, your opponent has the same blockstun and you have the same advantage, but you get to use more of it while the opponent is locked down.
If you hit it higher, your opponent has the same blockstun and you have the same advantage, only you spent about 12 frames of it landing from your jump.
Since in the air, you can't take any other action (barring air cancels like smokebomb and air missile) after attacking, which is what you defined "advantage" as.
If I hit you with Bane's j.2 at the beginning of his jump, you're in stagger for 36 frames.
If I hit you with Bane's j.2 at the end of his jump, you're in stagger for 36 frames.
If you block Bane's j.2 at the beginning of his jump, I'm -7 on block.
If you block Bane's j.2 at the end of his jump, I'm -7 on block.
The only difference is I use up 25 of my 36 frames landing at the beginning, and only 4 of them at the end. I still get the +36 on hit regardless of where, or when, I hit you with j.2. So, advantage doesn't change, advantage usage does.
